Schwalbe Big Ben outer tire This outer tire from Schwalbe has air suspension built right in. This Big Ben is very similar to the Big Apple outer tire from Schwalbe however the details are even finer with the robust anti-puncture layer. Specifications: Inch size: 28 x 2.00 ETRTO size: 50-622 Type of bicycle: city bike Tire type: wire tyre Reflection: yes Color: beige Material: rubber Weight: 650 grams Tire pressure: 2.50/5.00 bar (35/70 psi) Maximum load: 105 kg EPI: 67 Rubber compound: Green Compound Design: K-Guard